Results 51 to 60 of about 428 (163)
WHAT IS ZAMIA PRASINA (ZAMIACEAE: CYCADALES)?
, 2009 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Calonje, Michael, Meerman, Jan
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American Journal of Botany, Volume 111, Issue 9, September 2024.Abstract Premise The Cenozoic Macquarie Harbour Formation (MHF) hosts one of the oldest and southernmost post‐Cretaceous fossil plant assemblages in Australia. Coinciding with the Early Eocene Climatic Optimum (EECO) and predating the breakup of Australia from Antarctica, it offers critical data to study the diversity and extent of the Austral Polar ...
Miriam A. Slodownik
wiley +1 more source
The evolutionary history of Coleoptera (Insecta) in the late Palaeozoic and the Mesozoic
Systematic Entomology, Volume 49, Issue 3, Page 355-388, July 2024.Structural transformations of the elytra and abdomen played a major role in the early beetle evolution in the Permian. Polyphaga appear late in the fossil record, with only a few fossils of Elateriformia in the Late Triassic. Several factors were involved in the enormous diversification of beetles in the Cretaceous but evolutionary interactions with ...
Rolf G. Beutel +6 more
wiley +1 more source
Parallel evolution of angiosperm‐like venation in Peltaspermales: a reinvestigation of Furcula
New Phytologist, Volume 242, Issue 6, Page 2845-2856, June 2024.Summary Leaf venation is a pivotal trait in the success of vascular plants. Whereas gymnosperms have single or sparsely branched parallel veins, angiosperms developed a hierarchical structure of veins that form a complex reticulum. Its physiological consequences are considered to have enabled angiosperms to dominate terrestrial ecosystems in the Late ...
Mario Coiro +5 more
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Patterns of variation in fleshy diaspore size and abundance from Late Triassic–Oligocene
Biological Reviews, Volume 99, Issue 2, Page 430-457, April 2024.ABSTRACT Vertebrate‐mediated seed dispersal is a common attribute of many living plants, and variation in the size and abundance of fleshy diaspores is influenced by regional climate and by the nature of vertebrate seed dispersers among present‐day floras.
Duhita Naware, Roger Benson
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Ecological Research, Volume 39, Issue 2, Page 131-158, March 2024.Cycads represent an example of the success of evolutionary stasis. Despite its conservative nature, the cycad genus Dioon has been able to diversify due to phylogenetic, stochastic, and environmental factors associated with the biogeography of Mexico. Abstract Cycads represent an example of the success of evolutionary stasis. Despite their early origin,
José Said Gutiérrez‐Ortega +8 more
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Mongolitria: A new Early Cretaceous three‐valved seed from Northeast Asia
American Journal of Botany, Volume 111, Issue 2, February 2024.Abstract Premise Fossil seeds recovered from the Early Cretaceous of Mongolia and Inner Mongolia, China, are described and assigned to Mongolitria gen. nov., a new genus of gymnosperm seed. Methods Abundant lignitized seeds along with compression specimens isolated from the matrix were studied using a combination of scanning electron microscopy ...
Maya A. Bickner +5 more
wiley +1 more source
Boletín de la Sociedad Argentina de BotánicaEn el registro fósil encontramos una serie de morfologías, cuyo origen sólo puede ser inferido a partir de los estudios ontogenéticos. De este modo, la comprensión de los procesos del desarrollo en plantas y el patrón resultante es de suma importancia ...
Josefina Bodnar , Eliana Paula Coturel
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Paleoflora de la Formación Carrizal (Triásico Medio-Superior), provincia de San Juan, Argentina
Revista Mexicana de Ciencias Geológicas, 2014 En este artículo se presenta el estudio de una paleoflora recuperada del Triásico continental de la Formación Carrizal (Grupo Marayes), Cuenca de Marayes-El Carrizal, provincia de San Juan, Argentina.
Alicia Isabel Lutz +1 more
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